Paul h



' .(No Model.)

PLH GRID/[M1 STEAM BOILER TUBE CLEANER.-

N0. 3'76-,820. Patented Jan 24,1888.

n. versus, Fnolwl llmgmphec Washington. a. c.

TNIITIED STATES PATENT OF ICE.

PAUL H. GRIMM, OFGLEN coVE, NEW YORK, ASSIGNOR or ONE-HALE TO JOHNDURYEA, or SAME r Ao s'reAm-eolLea-ruee CLEANER.

SPECIFICATION forming part Of Letters Patent NO. 376,820, dated January24, 1888. I

Application tiled April 11, 1887. Serial No. 234.327. (No model.) i

To all whom it may concern.-

, Be it known that I, PAUL H. GRIMM, of Glen (love, in the county ofQueens andState of New York, have invented a new and useful Improvementin Steam-Boiler-Tube Cleaners, of which the following is aspecification.

My invention relates to that class of boiler tube cleaners in which acurrent or currents of steam isor are employed to induce a blast or flowof air through the boiler-tube inorder to remove therefrom the deposits;and theobject of my invention is to provide a device which may be madeand sold at a small price, and which comprises within itself a completeinjecting device, so that whatever be the size.

of the tube into which it is inserted itwill 0perate effectively. I g

My invention consists in a tube-cleaner com- In the accompanyingdrawings, Figure 1 is an exterior view of a. cleaner embodying myinvention. Fig. 2 is an axial'section thereof; and Fig. 3'is an axialsection of a cleaner of substantially the same construction as Fig. 2,

but embodying a slight modification in. the arrangement of thesteam-pipe and handle.

Similar letters of refcrencedesignate corresponding parts in the severalfigures. Referring first to Figs. 1 and 2, it will b seen that thedevice in itself is composed of a singlecasting, which comprises asuction-tube, A, a combining-chamber, 'B, and a forcingtube, 0. Asteam-belt, D, which is formed by casting, surrounds the device, and mayhave connected with it a steam-inlet hose at the opening d. I have hererepresented a handle, E, which may be of wood,and which forms an axialextension of the device, inserted in the end of the suction-tube A andprojecting rearward openings may be employed, as experience may show tobe desirable, and they are arranged equidistant about a circle. I preferthat the axes of the jet-openings-d should be in lines which fall withina circle coincident with the internal circ'umferenceand diameter of the"forcing-tube at its smallest point, .or, in other 2 words, that the axesof these jet-openings should be upon the lines 8, (shown in Fig.2)

so that they may be formed by adrill intro:

duced through the open forcing-tube O, the device being held at a properangle meanwhile.

Inasmuch as the jet-apertures d are valveless;

and permanently open, they are substantially cylindric, and may beformed bya simple drill introduced through the end of the forcing-tube.G. This arrangement of the jet openings d enables me to leave the outerwall of the.

steam-belt D imperforate, and to thus enable Itwillthe device to be madewith less laborl be observed that these jet-openings d are un obstructedby any valves and permanently stop-valve in the hose which suppliessteam.

to the cleaner. The steam-jets d meet in the center of the device, andby their action they induce the flow of air through the inlet-openingse, and this air combines with the steam and is delivered in a strongblast through the forcing-tube, which is introduced into the end of theboiler-tube to be cleaned. It will therefore be seen that the deviceconstitutes, a com-' plete injector 'of air independent of .the tubematerially from that -above described, "save that the steam-belt D isshown as of circular I transverse section andhas communicating with it abranch steam-pipe, F, parallel with the axis of the device, and to thebranch f of this pipe a steam-hose may be applied. As I hererepresented, the elbow f, joining the socket, f, which receives ahandle, E, of wood. This elbow f may be arranged at any suitabledistance from the device, a proper length of pipe, F, being employed,and having a horizontal branch, f, for the adjustment of a steam-hose,it is adapted for cleaning tubes of vertical boilers. I

It will be seen from the abovedescription that I provide a cleaner ofthe simplest possible form and construction, which may be made and soldat a small price, and it will be effective whatever be the diameter ofthe boiler-tube to which it is applied.

In my Patent No. 282,074, granted July 31, 1883, I have shown ajet-exhauster intended 'for use in fixed position, and which in somerespects resembles my present device. In that exhauster, however, thejet-openings are tapered from the steam-belt toward thecombining-chamber, and are fitted with conical valves on stems whichwork through suitable stud"- ing-boxes in the outer wall of the belt.Owing to such tapered form of the jet-openings they could be formedonlyby making openings in the outer wall of the belt for the insertionof a drill, and in these latter openings are fitted plugs or bonnets andstuffing-boxes, through which work the valve-stems. In my presentinvention the jet apertures or openings d, being valveless andpermanently open, need not be tapered toward the combining-chamber, butare substantially oylindric, and hence can be formed bya drill insertedthrough the open end of the forcing-tube. The jet-apertures being thusformed, the outer wall of'the belt D is left imperforate and solid andthe construction is greatly simplified.

What I claim as myinvention, and desire to secure by Letters Patent, is-

1. The tube-cleaner herein described, consisting of a single castingcomprising a suction-tube, A, a combining-chamber, B, and aforcing-tube, G, and having a surrounding steam-belt, D, the outer wallof which is solid and imperforate, and which communicates with thecombining-chamber by a circular series of valveless and permanently-openjetapertures, d, of substantially cylindric bore, and having a handle,E, extending rearwardly beyond the suction-tube, substantially as hereindescribed.

2. The tube-cleaner herein described, comprising the suction-tube A,with its side inlets, e, for air, the combining-chamber B, and theforcing-tube G, and having a steam-belt, D, communicating with itsinterior by the circular series of steam-jet openings d, and a handle,E, inserted in the end of the suctiontube and projecting rearwardtherefrom, substantially as herein described.

PAUL H. GRIMM.

Vitnesses:

FREDK. HAYNES, HENRY J. MoBRIDE.

